Allen Buchanan is Professor of Philosophy at the University of Arizona. His recent books include The Heart of Human Rights (2013) and Ideology and Revolution (2025).
""With intellectual precision and autobiographical candor, this book unpacks the causes and consequences of ideological division. Buchanan skillfully weaves together philosophical analysis, empirical evidence, and personal insight to reveal how tribalism erodes our shared humanity and democracy itself. Both compelling and insightful, it is an invaluable resource for anyone committed to safeguarding democracy’s future."" -- Michael Hannon, Associate Professor of Philosophy, University of Nottingham, UK.